1 /* $NetBSD: iq31244_pci.c,v 1.6 2014/03/29 19:28:27 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * IQ31244 PCI interrupt support. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: iq31244_pci.c,v 1.6 2014/03/29 19:28:27 christos Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 49 #include <machine/autoconf.h> 50 #include <sys/bus.h> 51 52 #include <evbarm/iq80321/iq80321reg.h> 53 #include <evbarm/iq80321/iq80321var.h> 54 55 #include <arm/xscale/i80321reg.h> 56 #include <arm/xscale/i80321var.h> 57 58 #include <dev/pci/pcidevs.h> 59 #include <dev/pci/ppbreg.h> 60 61 int iq80321_pci_intr_map(const struct pci_attach_args *, 62 pci_intr_handle_t *); 63 const char *iq80321_pci_intr_string(void *, pci_intr_handle_t, char *, size_t); 64 const struct evcnt *iq80321_pci_intr_evcnt(void *, pci_intr_handle_t); 65 void *iq80321_pci_intr_establish(void *, pci_intr_handle_t, 66 int, int (*func)(void *), void *); 67 void iq80321_pci_intr_disestablish(void *, void *); 68 69 void 70 iq80321_pci_init(pci_chipset_tag_t pc, void *cookie) 71 { 72 73 pc->pc_intr_v = cookie; /* the i80321 softc */ 74 pc->pc_intr_map = iq80321_pci_intr_map; 75 pc->pc_intr_string = iq80321_pci_intr_string; 76 pc->pc_intr_evcnt = iq80321_pci_intr_evcnt; 77 pc->pc_intr_establish = iq80321_pci_intr_establish; 78 pc->pc_intr_disestablish = iq80321_pci_intr_disestablish; 79 } 80 81 int 82 iq80321_pci_intr_map(const struct pci_attach_args *pa, pci_intr_handle_t *ihp) 83 { 84 struct i80321_softc *sc = pa->pa_pc->pc_intr_v; 85 int b, d, f; 86 uint32_t busno; 87 88 busno = bus_space_read_4(sc->sc_st, sc->sc_atu_sh, ATU_PCIXSR); 89 busno = PCIXSR_BUSNO(busno); 90 if (busno == 0xff) 91 busno = 0; 92 93 pci_decompose_tag(pa->pa_pc, pa->pa_intrtag, &b, &d, &f); 94 95 /* No mappings for devices not on our bus. */ 96 if (b != busno) 97 goto no_mapping; 98 99 switch (d) { 100 case 1: /* PCIX-PCIX bridge */ 101 /* 102 * The S-ATA chips are behind the bridge, and all of 103 * the S-ATA interrupts are wired together. 104 */ 105 *ihp = ICU_INT_XINT(2); 106 return (0); 107 108 case 2: /* PCI slot */ 109 /* All pins are wired together. */ 110 *ihp = ICU_INT_XINT(3); 111 return (0); 112 113 case 3: /* i82546 dual Gig-E */ 114 if (pa->pa_intrpin == 1 || pa->pa_intrpin == 2) { 115 *ihp = ICU_INT_XINT(0); 116 return (0); 117 } 118 goto no_mapping; 119 120 default: 121 no_mapping: 122 printf("iq80321_pci_intr_map: no mapping for %d/%d/%d/%c\n", 123 pa->pa_bus, pa->pa_device, pa->pa_function, 124 '@' + pa->pa_intrpin); 125 return (1); 126 } 127 128 return (0); 129 } 130 131 const char * 132 iq80321_pci_intr_string(void *v, pci_intr_handle_t ih, char *buf, size_t len) 133 { 134 135 strlcpy(buf, i80321_irqnames[ih], len); 136 return buf; 137 } 138 139 const struct evcnt * 140 iq80321_pci_intr_evcnt(void *v, pci_intr_handle_t ih) 141 { 142 143 /* XXX For now. */ 144 return (NULL); 145 } 146 147 void * 148 iq80321_pci_intr_establish(void *v, pci_intr_handle_t ih, int ipl, 149 int (*func)(void *), void *arg) 150 { 151 152 return (i80321_intr_establish(ih, ipl, func, arg)); 153 } 154 155 void 156 iq80321_pci_intr_disestablish(void *v, void *cookie) 157 { 158 159 i80321_intr_disestablish(cookie); 160 } 161